Seawater-pH measurements for ocean-acidification observations
Seawater-pH measurements for ocean-acidification observations
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DOI：
10.1016/j.trac.2012.07.016
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发表时间：
2012-11-01
影响因子：
13.1
通讯作者：
Achterberg, Eric P.
中科院分区：
文献类型：
--
作者：
Rerolle, Victoire M. C.;Floquet, Cedric F. A.;Achterberg, Eric P.
自工业革命开始以来，海洋对人为二氧化碳的吸收由于随后的碳酸盐化学变化(海洋酸化)而被认为是对海洋生态系统的严重挑战。此外，二氧化碳的吸收正在降低海洋吸收未来二氧化碳排放的能力。为了跟踪海洋碳酸盐体系的变化，需要具有良好空间和时间分辨率的高质量分析测量。高精度和准确的酸碱度测量现在是可能的，并使我们能够确定海洋酸化的进程。PH分光光度技术现在得到了广泛的应用，能够进行所需的高质量测量。分光光度pH系统部署在船上，现场部署在远程平台上。然而，更广泛的现场应用需要更小和更坚固的仪器，以便能够进行常规的高分辨率测量，即使在最偏远的地区也是如此。我们严格审查海洋pH测量，并重点介绍最先进的分光光度pH测量技术和仪器。我们提出了一种集成在高准确度和精密度的船用仪器中的简单微流控设计，作为迈向目标PH值微传感器系统的关键一步。(C)2012爱思唯尔有限公司。保留所有权利。
The uptake of anthropogenic CO2 by the oceans since the onset of the industrial revolution is considered a serious challenge to marine ecosystems due to ensuing carbonate-chemistry changes (ocean acidification). Furthermore, the CO2 uptake is reducing the ocean's capacity to absorb future CO2 emissions. In order to follow the changes in the ocean's carbonate system, high-quality analytical measurements with good spatial and temporal resolution are necessary. High-precision and accurate pH measurements are now possible, and allow us to determine the progression of ocean acidification. The spectrophotometric pH technique is now widely used and capable of the required high-quality measurements. Spectrophotometric pH systems are deployed on ships and in situ on remote platforms. Smaller and more rugged instruments are nevertheless required for more widespread in situ application to allow routine high-resolution measurements, even in the most remote regions.We critically review oceanic pH measurements, and focus on state-of-the-art spectrophotometric pH measurement techniques and instrumentation. We present a simple microfluidic design integrated in a shipboard instrument featuring high accuracy and precision as a key step towards a targeted pH microsensor system. (C) 2012 Elsevier Ltd. All rights reserved.